Nasreddine Aoumeur Specifying Distributed and Dynamically Evolving Information Systems Using an Extended CO-Nets Approach. 91-111 http://link.springer.de/link/service/series/0558/bibs/1773/17730091.htm 1999 conf/fmldo/1999lncs FMLDO - Selected Papers db/conf/fmldo/fmldoLNCS99.html#Aoumeur99a